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Background: Submucosal myoma is a common gynecological disease that causes menorrhagia and infertility. While hysteroscopic surgery is a minimally invasive and effective method for treating submucosal myomas, its feasibility depends on the size and location of the myomas. Conversely, abdominal procedures enable enucleation of submucosal myomas and preservation of endometrial integrity, but are accompanied by technical difficulties. Herein we report the case of an infertile woman with a submucosal and an intramural myoma who underwent laparoscopic myomectomy using laparoscopic ultrasonography. Case: The patient was a 36-year-old infertile woman. Transvaginal ultrasonography revealed a 15 mm submucosal myoma with a 60% myometrial extension in the anterior uterine wall and a 49 mm intramural myoma in the posterior wall. During myomectomy, the submucosal myoma was not apparent from the external side of the uterus; therefore, laparoscopic ultrasonography was used to detect it. Under ultrasonography, vasopressin was injected between the myoma and the myometrium, thereby separating the layers. Consequently, we were able to resect both myomas without breaching the endometrium. Conclusions: The present case demonstrates the effectiveness of laparoscopic ultrasonography for detecting submucosal myomas and ensuring injection of vasopressin into the proper layer. These advantages allow surgeons to preserve endometrial integrity during laparoscopic myomectomy.

Objective: Laparoscopic video-based educational material helps in self-training of laparoscopists. However, its effectiveness in medical students remains unclear. During the COVID-19 pandemic, we stopped clinical training at our hospital and instead provided the abovementioned educational material. In this study, we clarified its effectiveness in medical students.Methods: From July 2020 to May 2021, 87 fifth-grade medical students watched a 30-min video on total laparoscopic hysterectomy. Using the Likert scale, we interviewed the students about their impression of the material. We also asked whether it helped understand anatomy or surgical procedures and motivated students to study obstetrics and gynecology or surgery. Results:The length and difficulty of the material were evaluated as "appropriate" by most of the students. Interest or aptitude of the material and helpfulness for learning pelvic anatomy or gynecological surgery both scored the highest.The second-best score was regarding the motivation to study obstetrics and gynecology or to join surgery. The impression of the length of the material correlated negatively with its aptitude. In contrast, the aptitude was positively correlated with helpfulness for understanding pelvic anatomy, surgery, or motivation for learning.Conclusions: In this study, laparoscopic video-based educational material was favorably accepted by medical students.However, assessments of the strength and weakness of the material are needed for improving medical education after the COVID-19 pandemic.